Sodium nitrite
Sodium nitrite
| Cov khoom | |
| Tshuaj formula | NAS 3 |
| Molar loj | 84,9947 g / mol |
| Qhov tshwm sim | Dawb hmoov |
| Qhov ntom | 2.257 g / cm3, khoom |
| Melting point | 308 ° C (586 ° F; 581 K) |
| Boiling point | 380 ° C (716 ° F; 653 K) decomposes |
| Solubility hauv dej | 73 g / 100 mL (0 ° C) 91.2 g / 100 mL (25 ° C) 180 g / 100 mL (100 ° C) |
| Solubility | soluble heev hauv ammonia, hydrazine soluble nyob rau hauv cawv me ntsis soluble hauv pyridine insoluble hauv acetone |
Sodium nitrite (NaNO2) yog cov ntsev inorganic uas yog tsim los ntawm nitrite ions thiab sodium ions 'cov tshuaj tiv thaiv.Sodium nitrite yog yooj yim hydrolyzing thiab soluble hauv dej thiab kua ammonia.Nws cov tshuaj aqueous yog alkaline, PH yog li 9;thiab nws yog me ntsis soluble hauv cov kuab tshuaj organic xws li ethanol, methanol thiab ether.Nws yog ib qho muaj zog oxidizer thiab muaj cov khoom txo qis thiab.Thaum raug huab cua, Sodium Nitrate yuav oxidized maj mam, thiab tig mus rau hauv sodium nitrate rau saum npoo.Brown nitrogen dioxide gas yog tso tawm nyob rau hauv tsis muaj zog acid mob.Kev sib cuag nrog cov organic teeb meem los yog txo tus neeg sawv cev yuav ua rau tawg los yog combustion, ntxiv rau, tso tawm cov tshuaj lom thiab irritating nitrogen oxide gas.Sodium Nitrite kuj tseem tuaj yeem oxidized los ntawm cov oxidizing muaj zog, tshwj xeeb tshaj yog ammonium ntsev, xws li ammonium nitrate, ammonium persulfate, thiab lwm yam, uas tuaj yeem cuam tshuam nrog ib leeg los ua kom muaj cua sov ntawm qhov kub thiab txias, ua rau cov khoom siv hluav taws xob hlawv.Yog tias kub txog 320 ℃ lossis siab dua, Sodium Nitrate yuav decompose rau oxygen, nitrogen oxide thiab sodium oxide.Thaum sib cuag nrog rau cov organic teeb meem, nws yog ib qho yooj yim mus hlawv thiab tawg.
Daim ntawv thov:
Kev tsom xam chromatographic: Kev tsom xam dej yog siv los txiav txim siab mercury, potassium thiab chlorate.
Diazotization reagents: Nitrosation reagent;Av tsom xam;Kev txiav txim siab ntawm serum bilirubin hauv daim siab ua haujlwm.
Bleaching tus neeg saib xyuas rau txhob lo lo ntxhuav thiab linen, hlau kho cua sov tus neeg saib xyuas;hlau corrosion inhibitor;Cyanide lom tshuaj tua kab mob, kuaj tshuaj analytical reagents.Hauv cheeb tsam zaub mov, nws yog siv los ua chromophores 'tus neeg sawv cev thaum ua cov khoom noj nqaij, nrog rau cov tshuaj tua kab mob, tshuaj tua kab mob.Nws kuj muaj kev siv tshuaj dawb, electroplating thiab kev kho hlau.
Cia saib xyuas: sodium nitrite yuav tsum muab khaws cia rau hauv qhov kub thiab txias, qhuav thiab cua ventilated warehouse.Qhov rooj thiab qhov rais yog nruj kom tiv thaiv tshav ntuj ncaj qha.Nws tuaj yeem khaws cia rau hauv Tshuag nrog lwm cov nitrates uas tsis yog ammonium nitrate, tab sis cais los ntawm cov organic teeb meem, cov teeb meem inflammable, txo tus neeg sawv cev thiab qhov hluav taws kub.
